diff options
| -rw-r--r-- | llvm/lib/Target/ARM/AsmParser/ARMAsmParser.cpp | 13 | ||||
| -rw-r--r-- | llvm/test/MC/ARM/diagnostics.s | 17 |
2 files changed, 30 insertions, 0 deletions
diff --git a/llvm/lib/Target/ARM/AsmParser/ARMAsmParser.cpp b/llvm/lib/Target/ARM/AsmParser/ARMAsmParser.cpp index b62706c45fb..5e074c4e429 100644 --- a/llvm/lib/Target/ARM/AsmParser/ARMAsmParser.cpp +++ b/llvm/lib/Target/ARM/AsmParser/ARMAsmParser.cpp @@ -5728,6 +5728,19 @@ bool ARMAsmParser::validateInstruction(MCInst &Inst, "source operands must be sequential"); return false; } + case ARM::STR_PRE_IMM: + case ARM::STR_PRE_REG: + case ARM::STR_POST_IMM: + case ARM::STR_POST_REG: { + // Rt must be different from Rn. + const unsigned Rt = MRI->getEncodingValue(Inst.getOperand(1).getReg()); + const unsigned Rn = MRI->getEncodingValue(Inst.getOperand(2).getReg()); + + if (Rt == Rn) + return Error(Operands[3]->getStartLoc(), + "source register and base register can't be identical"); + return false; + } case ARM::SBFX: case ARM::UBFX: { // Width must be in range [1, 32-lsb]. diff --git a/llvm/test/MC/ARM/diagnostics.s b/llvm/test/MC/ARM/diagnostics.s index 88c5fb5b688..e26566df8ee 100644 --- a/llvm/test/MC/ARM/diagnostics.s +++ b/llvm/test/MC/ARM/diagnostics.s @@ -491,3 +491,20 @@ foo2: @ CHECK-ERRORS: ^ @ CHECK-ERRORS: error: immediate expression for mov requires :lower16: or :upper16 @ CHECK-ERRORS: ^ + + str r0, [r0, #4]! + str r0, [r0, r1]! + str r0, [r0], #4 + str r0, [r0], r1 +@ CHECK-ERRORS: error: source register and base register can't be identical +@ CHECK-ERRORS: str r0, [r0, #4]! +@ CHECK-ERRORS: ^ +@ CHECK-ERRORS: error: source register and base register can't be identical +@ CHECK-ERRORS: str r0, [r0, r1]! +@ CHECK-ERRORS: ^ +@ CHECK-ERRORS: error: source register and base register can't be identical +@ CHECK-ERRORS: str r0, [r0], #4 +@ CHECK-ERRORS: ^ +@ CHECK-ERRORS: error: source register and base register can't be identical +@ CHECK-ERRORS: str r0, [r0], r1 +@ CHECK-ERRORS: ^ |
